UV Index in Vassouras, Brazil

Last updated: July 2, 2025

Understanding the UV Index in Vassouras, Brazil, is crucial for protecting your skin and overall health. With the tropical climate characterized by significant sun exposure, being aware of UV levels can help prevent sunburn and reduce long-term skin damage. During peak hours, particularly between 11:00 AM and 1:00 PM, the UV Index can reach levels of 7, indicating a high risk of harm from unprotected sun exposure. By keeping an eye on the UV Index, residents and visitors alike can enjoy outdoor activities while prioritizing their skin health in the beautiful, sun-kissed Vassouras.

Hourly UV Index in Vassouras

The UV Index for the day provides a clear picture of sun exposure. Starting off gently at 1 in the early hours, the intensity gradually builds, reaching a peak of 7 between 11:00 and 12:00. This is the ideal time for sun protection, as skin can burn quickly. As the afternoon progresses, the index declines, dropping to 3 by 15:00 and further down to 1 by late afternoon. After sunset, the UV Index falls to 0, indicating safe conditions. Stay sun smart, especially during the peak hours for maximum protection!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	1	low	45 min
09:00	3	moderate	30 min
10:00	5	moderate	30 min
11:00	7	high	25 min
12:00	7	high	25 min
13:00	6	high	25 min
14:00	5	moderate	30 min
15:00	3	moderate	30 min
16:00	1	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Vassouras

The seasonal UV changes demonstrate that UV exposure remains particularly high during the first half of the year, with extreme levels peaking from January to April, where a burn can occur in as little as 10 minutes of unprotected sun exposure. High-risk months include January through April and September through November, all classified under the extreme exposure category, signaling the need for heightened sun safety measures during these times. As the year progresses into May, the UV Index drops to very high before transitioning to high levels in June and July, allowing for slightly longer burn times of 15 to 25 minutes. Visitors and residents are advised to take precautions year-round, but especially during the extreme months, by wearing sunscreen, protective clothing, and seeking shade to mitigate the risk of UV-related health issues.

Monthly Maximum UV Index for Vassouras, Brazil

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Vassouras. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Vassouras, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare Vassouras UV Index with Other Brazil Cities

The table above highlights how UV exposure in Vassouras compares to other major locations across Brazil. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Vassouras's solar exposure compared to other cities in Brazil. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Rio de Janeiro UVI	15	14	13	10	7	6	7	9	11	12	13	15
Sao Paulo UVI	16	15	12	11	8	6	7	9	11	13	14	15
Vassouras	16	15	13	11	8	6	7	9	11	13	13	15
Belo Horizonte UVI	17	16	14	12	9	7	8	10	12	13	14	16
Salvador UVI	14	14	14	13	10	9	9	12	12	15	15	14
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13